The Long Island rapper had been touring the record, with the last date set to end on Novembre 16 in California.

Musicians flocked to share their tribute to the young star including Pete Wentz, Mashmello and Rat Boy.

The news was confirmed by his manager (Image: Getty Images Europe)

Mikey Cortex shared three photos of the rapper to his Instagram account, writing: "I’m completely heart broken and lost right now. I can’t even feel it’s not real. I love you and I’ll miss you always. One of the realest. Please someone tell me this isn’t real."

American DJ Diplo wrote: "Peep had so much more to do man he was constantly inspiring me. I don't feel good man."

Music producer Marshmello tweeted: "I can't believe this....

"Peep was the nicest person. hanging out with him, talking to him about music, the song ideas we were going to do together and touring was so amazing. Everyone will miss you man."